<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        let router = {}
        router.name = 'aaa'
        router.path = '/index'

        const app = { router } // app 来代表 Vue的实例
        console.log(app);

        const newRouter = {}
        newRouter.name = 'bbb'
        newRouter.path = '/login'

        router.path = newRouter.path
    </script>
</body>

</html>